While skateboarding at 19 km/h, Alana throws a tennis ball at 11 km/h to her friend Oliver. If Alana is the reference frame, the speed of the tennis ball is km/h.

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asked Mar 19, 2018 222k views

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While skateboarding at 19 km/h, Alana throws a tennis ball at 11 km/h to her friend Oliver. If Alana is the reference frame, the speed of the tennis ball is km/h.

Physics
high-school

Coblr asked

by Coblr

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2 Answers

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8 km/h I think good luck if it's wrong

Antonietta answered Mar 20, 2018

by Antonietta

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the answer is 11 km/h ... i just took the test

FerDensetsu answered Mar 25, 2018

by FerDensetsu

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